INFO: task kworker/u4:5:1930 blocked for more than 143 seconds. Not tainted 6.2.0-rc6-syzkaller-17549-gca72d58361ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:5 state:D stack:0 pid:1930 ppid:2 flags:0x00000008 Workqueue: events_unbound io_ring_exit_work Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5293 [inline] __schedule+0x42c/0x574 kernel/sched/core.c:6606 schedule+0x64/0xa4 kernel/sched/core.c:6682 schedule_timeout+0x64/0x1b8 kernel/time/timer.c:2143 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 io_ring_exit_work+0x2f0/0x390 io_uring/io_uring.c:2912 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task kworker/u4:11:2566 blocked for more than 143 seconds. Not tainted 6.2.0-rc6-syzkaller-17549-gca72d58361ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:11 state:D stack:0 pid:2566 ppid:2 flags:0x00000008 Workqueue: events_unbound io_ring_exit_work Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5293 [inline] __schedule+0x42c/0x574 kernel/sched/core.c:6606 schedule+0x64/0xa4 kernel/sched/core.c:6682 schedule_timeout+0x64/0x1b8 kernel/time/timer.c:2143 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 io_ring_exit_work+0x2f0/0x390 io_uring/io_uring.c:2912 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d6856c8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d685d18 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d6855a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324 2 locks held by getty/4108: #0: ffff0000c5a33098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f8962f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor.3/4450: #0: ffff0001310380e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xc8/0xd4 fs/super.c:362 1 lock held by syz-executor.2/4462: #0: ffff00012b7e10e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xc8/0xd4 fs/super.c:362 2 locks held by kworker/u4:5/1930: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001fe0bd80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 2 locks held by kworker/u4:11/2566: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80002137bd80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 1 lock held by syz-executor.4/25587: 2 locks held by syz-executor.5/25596: =============================================